Power supply device and automobile

Abstract

The invention provides a power supply device and an automobile. The power supply device comprises a plurality of parallel battery modules, a liquid cooling flat tube bypassing the plurality of battery modules, processing controllers, a plurality of heating pieces and temperature transducers, wherein the heating pieces are arranged on the liquid cooling flat tube and make contact with the battery modules; the temperature transducers are arranged on the battery modules and used for measuring temperature of the battery modules; the temperature transducers and the heating pieces are electrically connected with the processing controllers; the processing controllers control the heating pieces to work to heat the battery modules when the temperature, detected by the temperature transducers, of the battery modules is lower than a first preset temperature value. Therefore, heating management of the battery modules can be subjected to independent control (namely, distributed control), the temperature of the battery modules can be adjusted flexibly and dynamically according to the actual temperature conditions of the battery modules, more uniform heating effect is realized, and the service life of each battery module can be prolonged effectively.

Description

technical field [0001] The invention relates to the field of battery heat management, in particular to a power supply device and an automobile. Background technique [0002] At present, due to the increasingly prominent problems of energy costs and environmental pollution, new energy vehicles have been raised to the height of national strategies due to their energy-saving, environmental protection, and economical characteristics. Pure electric vehicles and hybrid vehicles have attracted the attention of the government and various automobile companies because of their advantages of substantially eliminating or even zero-emission vehicle exhaust. However, pure electric and hybrid vehicles still have many technical problems to be solved. The heat-related problems of the battery are the key factors that determine its performance, safety, life and cost. The temperature level of a battery directly affects its energy and power performance in use. When the temperature is low, the ...

AI Technical Summary

Problems solved by technology

Charging the battery at too low a temperature may cause an instantaneous voltage overcharge and cause a short circuit

[0003] In the existing technology, the battery heating method is to uniformly heat all the battery modules through the vehicle heater, which cannot be controlled separately (that is, distributed control)

During use, due to differences in the quality of the batteries and their location settings, some batteries have high temperatures and others have low temperatures. If all the batteries are heated uniformly, it will affect the service life of the entire battery module. Efficiently equalizes the heating effect

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